Air filter box problem and P2187 code
02-10-2018, 07:24 PM
#1
Super Member
Thread Starter
Air filter box problem and P2187 code
Hi All,
Last week I decided to replace the air filters in my 2007 E63 with Mann filters. I tightened one of the screws on passenger side filter box too much and stripped a thread. Today I got a check engine with P2187 code. I am blaming that screw.
How can I fix the box? Should I buy the whole new air filter box assembly, or is there a way to fix that stripped thread?
Last week I decided to replace the air filters in my 2007 E63 with Mann filters. I tightened one of the screws on passenger side filter box too much and stripped a thread. Today I got a check engine with P2187 code. I am blaming that screw.
How can I fix the box? Should I buy the whole new air filter box assembly, or is there a way to fix that stripped thread?
02-10-2018, 08:33 PM
#3
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Thread Starter
02-10-2018, 09:09 PM
#4
Junior Member
Which screw did you strip? Besides the the stripped screw, do you have anything else taken apart or disconnected? P2187 is for Bank 1 (Passenger side) lean. That vehicle has 2 MAF sensors. Could a piece of dirt or debris gotten on the passenger side MAF while changing the filters? If the amount of air restriction (No air filter assembly) is changed while running, this can cause a lean or rich code, The fuel trim adaptions need to be reset after everything is reassembled and installed and the codes are cleared.
02-10-2018, 09:19 PM
#5
Super Member
Thread Starter
Which screw did you strip? Besides the the stripped screw, do you have anything else taken apart or disconnected? P2187 is for Bank 1 (Passenger side) lean. That vehicle has 2 MAF sensors. Could a piece of dirt or debris gotten on the passenger side MAF while changing the filters? If the amount of air restriction (No air filter assembly) is changed while running, this can cause a lean or rich code, The fuel trim adaptions need to be reset after everything is reassembled and installed and the codes are cleared.
Can that stripped screw be fixed? Maybe I should find bigger screw?
02-11-2018, 12:50 PM
#7
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02-11-2018, 12:55 PM
#8
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2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
Did you also pull the charcoal filters? They don't really do much and there have been claims of people picking up some power from it.
02-11-2018, 01:00 PM
#9
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02-11-2018, 01:05 PM
#10
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Thread Starter
Thanks. Bought JB Weld plastic adhesive. Will try to fill the hole that a screw goes into and try tightening the screw again. Will aso make sure everything is sitting properly
02-11-2018, 01:37 PM
#11
Junior Member
As long as the cover sits flat against the housing, that in itself should not cause the check engine light and codes. I see many MBZ's with stripped or broken air filter housings, it's kind of a cheap or weak design. The dense foam border of the filter element usually seals fine. After you complete the repair, I would clear the codes, drive the car as you normally do, and see if the same code comes back. If you have access to a scan tool or someone who does, I would copy down the freeze frame data. That way if the same code comes back you have some data to compare it to. Sometimes once is an anomaly, but in this case, twice will confirm a problem. See what happens. Good Luck.
02-11-2018, 01:46 PM
#12
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Thread Starter
As long as the cover sits flat against the housing, that in itself should not cause the check engine light and codes. I see many MBZ's with stripped or broken air filter housings, it's kind of a cheap or weak design. The dense foam border of the filter element usually seals fine. After you complete the repair, I would clear the codes, drive the car as you normally do, and see if the same code comes back. If you have access to a scan tool or someone who does, I would copy down the freeze frame data. That way if the same code comes back you have some data to compare it to. Sometimes once is an anomaly, but in this case, twice will confirm a problem. See what happens. Good Luck.
I asked the guy from Autozone to clear the code but he said he wasn’t allowed to. When you say access to scan tool, do you mean the OBD scanner or something more sophisticated?
02-11-2018, 03:02 PM
#13
Junior Member
A generic scan tool can clear codes. Many of them can view freeze frame data. There are many for under $100 (Autel has many). This one on Amazon is a great tool just to keep in your trunk.
. Don't get me wrong. It is not ultra sophisticated, but is very user friendly, and will provide you a lot of info. Remember, when you clear codes, you clear the freeze frame data too.
02-11-2018, 03:48 PM
#14
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2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
You can also clear codes with a cheap OBDII reader and the Torque app. Not the most high tech way of doing it but it's cheap. I think I paid around $5 for the Torque app.
Reader:
Reader:
02-11-2018, 08:38 PM
#15
Super Member
Thread Starter
A quick update. Took the filter box apart today again. There was some debris and a big leaf stuck to the filter right where the sensor is.
Assembled it back and the code is gone. Hope it doesn’t come back. Haven’t used the JB weld product yet.
Thanks for all suggestions.
Assembled it back and the code is gone. Hope it doesn’t come back. Haven’t used the JB weld product yet.
Thanks for all suggestions.
